The ACMD therefore recommends that the tryptamines covered by the proposed expanded generic definition in this report, are controlled under the Misuse of Drugs Act (1971) as Class A substances. In addition, a number of materials related to LSD, which are also hallucinogenic and evade current controls have been recommended to be named under the Misuse of Drugs Act 1971 as Class A substances. The Advisory Council is not aware of legitimate uses for the tryptamines and materials related to LSD and recommends that they be scheduled under Schedule 1 of the Misuse of Drugs Regulations 2001.